<html xmlns:wicket="http://wicket.apache.org/">
    <wicket:panel>
        <input wicket:id="cbExpand" type="checkbox">
        <label wicket:id="label"><span class="selectableLabel" wicket:id="selectableLabel"></span></label>        
        <ul>
            <li wicket:id="children"></li>
        </ul>
    </wicket:panel>
</html>
